public override DocIdSet GetDocIdSet(AtomicReaderContext context, Bits acceptDocs)
{
AtomicReader reader = context.AtomicReader;
FixedBitSet result = null; // lazy init if needed - no need to create a big bitset ahead of time
Fields fields = reader.Fields;
BytesRef spare = new BytesRef(this.termsBytes);
if (fields == null)
{
return result;
}
Terms terms = null;
TermsEnum termsEnum = null;
DocsEnum docs = null;
foreach (TermsAndField termsAndField in this.termsAndFields)
{
if ((terms = fields.Terms(termsAndField.field)) != null)
{
termsEnum = terms.Iterator(termsEnum); // this won't return null
for (int i = termsAndField.start; i < termsAndField.end; i++)
{
spare.Offset = offsets[i];
spare.Length = offsets[i + 1] - offsets[i];
if (termsEnum.SeekExact(spare))
{
docs = termsEnum.Docs(acceptDocs, docs, DocsEnum.FLAG_NONE); // no freq since we don't need them
if (result == null)
{
if (docs.NextDoc() != DocIdSetIterator.NO_MORE_DOCS)
{
result = new FixedBitSet(reader.MaxDoc);
// lazy init but don't do it in the hot loop since we could read many docs
result.Set(docs.DocID());
}
}
while (docs.NextDoc() != DocIdSetIterator.NO_MORE_DOCS)
{
result.Set(docs.DocID());
}
}
}
}
}
return result;
}
